Power bank



1. Power bank

2. Power bank

1.1 : Perspective

1.2 : Perspective

1.3 : Front

1.4 : Back

1.5 : Left

1.6 : Right

1.7 : Top

1.8 : Bottom

1.9 : Perspective

2.1 : Perspective

2.2 : Perspective

2.3 : Front

2.4 : Back

2.5 : Left

2.6 : Right

2.7 : Top

2.8 : Bottom

2.9 : Perspective

Fig. 1.1 is a perspective view of a first embodiment of a power bank showing my new design; fig. 1.2 is another perspective view thereof; fig. 1.3 is a front view thereof; fig. 1.4 is a rear view thereof; fig. 1.5 is a left side view thereof; fig. 1.6 is a right side view thereof; fig. 1.7 is a top view thereof; fig. 1.8 is a bottom view thereof; fig. 1.9 is a perspective view showing a use state of fig. 1.1 ; the broken lines are included to show features that form no part of the claimed designs. 

CLAIM The ornamental design for a power bank, as shown and described. 